CHARLESTON, S.C. – Top-seeded Elena Dementieva advanced to the Family Circle Cup semifinals when Dominika Cibulkova quit in the second set Friday because of a leg injury.

Dementieva next meets fifth-seeded Caroline Wozniacki, who routed Virginie Razzano 6-2, 6-0.

Sabine Lisicki, the 16th-seed who ousted Venus Williams on Thursday, advanced with an easy 6-4, 6-0 victory over unseeded Elena Vesnina. She will face sixth-seed Marion Bartoli of France, who easily eliminated Melinda Czink, 6-4, 6-1.

Dementieva won the first set 6-4, and was up 1-0 in the second against Cibulkova in a match featuring long baseline rallies. Cibulkova, seeded seventh, played with her left thigh wrapped and had it rewrapped between sets before retiring. She waved to the crowd as she walked off the green clay.

A tour spokesman said that Cibulkova’s leg had been wrapped because of a left adductor, or groin, injury.

Cibulkova led 4-3 in the first set before Dementieva won three straight games, surrendering only three points. She is 3-1 against Cibulkova.

Nadal, Djokovic earn way into semifinals

MONACO – Top-ranked Rafael Nadal moved one step closer to his fifth straight final at the Monte Carlo Masters, defeating Ivan Ljubicic 6-3, 6-3 Friday in his second match of the day.

Nadal also improved his winning streak in Monaco to 25 matches.

After beating Nicolas Lapentti 6-3, 6-0 in a rain-delayed third-round match, Nadal showed few signs of fatigue against Ljubicic in winning his 19th straight match on clay to reach the semifinals.

“I don’t remember ever winning two singles matches in one day, only doubles,” Nadal said. “I didn’t have a very long match (in the morning), so I was totally 100 percent to play the second. That’s important.”

Nadal next faces fourth-seeded Andy Murray, who reached his first career semifinal on clay after beating Nikolay Davydenko 7-6 (1), 6-4.

Third-seeded Novak Djokovic also reached the semifinals, defeating No. 7 Fernando Verdasco 6-2, 4-6, 6-3. Djokovic will meet No. 13 Stanislas Wawrinka, who upset No. 2 Roger Federer on Thursday. Wawrinka defeated German qualifier Andreas Beck 6-2, 6-4 on Friday.

Although Nadal has not dropped a set in Monte Carlo since beating Roger Federer in the 2006 final, he said he’s still adopting to his favorite surface.

“Have to play a little bit more inside, less mistakes, serve a little bit better,” Nadal said. “All aspects of the game, I have to improve.”

The Spaniard has won the last four Monte Carlo titles and gone on to capture the French Open each time. His last defeat on clay was in the second round of the Rome Masters in May.

Murray finished his rain-suspended third-round match by defeating Fabio Fognini 7-6 (11), 6-4 before facing Davydenko.

Davydenko led 4-1 in the second set before Murray won the next five games. He converted his third match point when Davydenko hit a forehand long.

“Every time I play against Nikolay he makes me run a lot, so I was prepared for that going into the match,” Murray said. “I was down 4-1 and managed to fight back. I’m quite looking forward to getting into my bed now.”

Only subscribers are eligible to post comments. Please subscribe or to participate in the conversation. Here’s why.

Use the form below to reset your password. When you've submitted your account email, we will send an email with a reset code.